WO2021192611A1 - Réfrigérateur à tube émetteur d'impulsions - Google Patents

Réfrigérateur à tube émetteur d'impulsions Download PDF

Info

Publication number
WO2021192611A1
WO2021192611A1 PCT/JP2021/003503 JP2021003503W WO2021192611A1 WO 2021192611 A1 WO2021192611 A1 WO 2021192611A1 JP 2021003503 W JP2021003503 W JP 2021003503W WO 2021192611 A1 WO2021192611 A1 WO 2021192611A1
Authority
WO
WIPO (PCT)
Prior art keywords
pulse tube
flow path
flow
stage
path resistance
Prior art date
Application number
PCT/JP2021/003503
Other languages
English (en)
Japanese (ja)
Inventor
貴士 平山
Original Assignee
住友重機械工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 住友重機械工業株式会社 filed Critical 住友重機械工業株式会社
Publication of WO2021192611A1 publication Critical patent/WO2021192611A1/fr

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point

Definitions

  • the present invention relates to a pulse tube refrigerator.
  • a type of pulse tube refrigerator in which a loop path for refrigerant gas including a pulse tube and a regenerator is formed.
  • a gas flow with a DC component also called a "DC flow”
  • the DC flow affects the refrigerating performance of the pulse tube refrigerator. Therefore, in order to adjust the DC flow, a needle valve incorporating an orifice is arranged in the loop path. This orifice is designed so that the geometric shape of the flow path differs depending on the flow direction passing through the needle valve (see, for example, Patent Document 1).
  • One of the exemplary objects of an aspect of the present invention is to provide a simple configuration for adjusting the DC flow of a pulse tube refrigerator.
  • the pulse tube refrigerating machine is a bidirectional flow path connected to a pulse tube and a pulse tube inflow flow and a pulse tube outflow flow alternately, and has a flow path resistance portion. It has a bidirectional flow path in which the pulse tube inflow flow passes through the flow path resistance portion from its inlet side, and the pulse tube outflow flow passes through the flow path resistance section from its outlet side, and the pulse tube inflow flow is flow path resistance.
  • a temperature regulator provided in the bidirectional flow path so that the inlet side of the section is adjusted to the first temperature and the outflow of the pulse tube is adjusted to the second temperature different from the first temperature on the outlet side of the flow path resistance section. And.
  • FIG. 1 is a diagram schematically showing a part of the pulse tube refrigerator 10 according to the embodiment.
  • the pulse tube refrigerator 10 includes a pulse tube 50 and a bidirectional flow path 52 connected to the pulse tube 50 and having a flow path resistance portion 54.
  • the bidirectional flow path 52 is connected to the high temperature end of the pulse tube 50, and the flow of working gas (for example, helium gas) entering and exiting the pulse tube 50 is allowed.
  • working gas for example, helium gas
  • the pulse tube inflow flow 56 and the pulse tube outflow flow 58 alternately flow in the bidirectional flow path 52.
  • the pulse tube inflow flow 56 and the pulse tube outflow flow 58 are working gas flows that are opposite to each other.
  • the pulse tube inflow flow 56 passes through the flow path resistance portion 54 from its inlet side and flows into the pulse tube 50.
  • the pulse tube outflow flow 58 flows out from the pulse tube 50 and passes through the flow path resistance portion 54 from its outlet side.
  • the pulse tube inflow flow 56 is generated in one part of the refrigeration cycle of the pulse tube refrigerator 10 (eg, part of the intake process), and the pulse tube outflow flow 58 is the other part of the refrigeration cycle of the pulse tube refrigerator (eg exhaust). It is generated in a part of the process).
  • the pulse tube refrigerator 10 appropriately delays the phase of the displacement vibration of the gas element (also called a gas piston) in the pulse tube 50 with respect to the pressure vibration of the working gas, so that the pulse tube 50 PV work can be generated at the low temperature end to cool the cooling stage provided at the low temperature end of the pulse tube 50.
  • the pulse tube refrigerator 10 can cool a gas, liquid, or an object thermally coupled to the cooling stage that is in contact with the cooling stage.
  • the cooling stage of the first stage is cooled to, for example, less than 100K (for example, about 30K to 60K), and the cooling stage of the second stage is cooled to, for example, about 4K or less. Will be done.
  • Various known configurations can be appropriately adopted as basic components of the pulse tube refrigerator 10 such as a vibration flow source and a phase control mechanism. Some exemplary configurations will be described later with reference to FIGS. 4 and 5.
  • the flow path resistance portion 54 is, for example, a fixed orifice. That is, the shape of the orifice is fixed.
  • the flow path resistance portion 54 is a simple fixed orifice having the same flow path shape on the inlet side and the outlet side.
  • the fixed orifice is plane symmetric with respect to a plane of symmetry 60 that is orthogonal to the direction of the pulse tube inflow flow 56 and the pulse tube outflow flow 58 and passes through the center of the orifice.
  • a non-plane symmetric orifice that is, an orifice having different flow path shapes on the inlet side and the outlet side may be used as the flow path resistance portion 54.
  • variable orifice for example, an orifice having a variable flow path cross-sectional area perpendicular to the flow direction may be used as the flow path resistance portion 54, whereby the flow path resistance portion 54 is the working gas of the bidirectional flow path 52.
  • the flow rate may be adjustable.
  • the pulse tube refrigerator 10 includes a temperature controller 62 provided in the bidirectional flow path 52.
  • the temperature regulator 62 adjusts the pulse tube inflow flow 56 to the first temperature on the inlet side of the flow path resistance portion 54, and adjusts the pulse tube outflow flow 58 to the first temperature on the outlet side of the flow path resistance portion 54, which is different from the first temperature. It is configured to adjust to temperature.
  • the temperature controller 62 includes a heater 64 that heats the pulse tube inflow flow 56 on the inlet side of the flow path resistance portion 54.
  • the heater 64 is arranged in the bidirectional flow path 52 on the inlet side of the flow path resistance portion 54.
  • the heater 64 may be an appropriate heating appliance such as an electric heater.
  • the heater 64 may be a heating device that heats by utilizing exhaust heat from a component of the pulse tube refrigerator 10 that generates heat such as a buffer volume and a compressor or peripheral equipment.
  • the heater 64 may be a heat exchanger that heats the working gas by heat exchange between the temperature control fluid having a temperature higher than that of the working gas and the working gas.
  • the pulse tube inflow flow 56 flows into the flow path resistance portion 54 in a state of being heated to the first temperature by the heater 64. Then, the pulse tube inflow flow 56 passes through the flow path resistance portion 54 and flows into the pulse tube 50 from the high temperature end of the pulse tube 50. Since the ambient temperature (for example, room temperature) is around the high temperature end of the pulse tube 50, the working gas flowing into the pulse tube 50 dissipates heat and the temperature drops to a second temperature. The second temperature is lower than the first temperature. In this way, the pulse tube outflow flow 58 when flowing into the flow path resistance portion 54 from the outlet side of the flow path resistance portion 54 has a lower temperature than the pulse pipe inflow flow 56 on the inlet side of the flow path resistance portion 54. .. The temperature of the working gas flow flowing into the flow path resistance portion 54 differs depending on the direction of the flow.
  • FIG. 2 is a graph showing the temperature dependence of the pressure loss in the flow path resistance portion 54 according to the embodiment.
  • FIG. 2 shows the results of analysis and experiment on the flow path resistance generated in the gas flow when the helium gas passes through the flow path resistance portion 54 shown in FIG.
  • the horizontal axis represents the minimum cross-sectional area (mm 2 ) of the flow path resistance portion 54, that is, the flow path cross-sectional area at the plane of symmetry 60.
  • the vertical axis indicates the flow path resistance (MPa) of the flow path resistance portion 54, which corresponds to the pressure on the inlet side when the outlet side of the flow path resistance portion 54 is at atmospheric pressure.
  • the triangular reference numerals indicate the calculation results when the temperature of the gas flowing into the flow path resistance portion 54 is heated to 400K
  • the diamond-shaped reference numerals indicate the temperature of the gas flowing into the flow path resistance portion 54.
  • the calculation result in the case of 300K is shown. Circles indicate experimental results.
  • the flow path resistance that the flow path resistance portion 54 brings to the gas flow passing therethrough can be made different.
  • the difference in the flow path resistance depending on the flow direction in the flow path resistance portion 54 causes the pulse tube refrigerator 10 to generate a DC flow.
  • the pulse tube inflow flow 56 has a first temperature (for example, 400K) on the inlet side of the flow path resistance portion 54, and the pulse tube outflow flow 58 has a second temperature (for example, 300K) on the outlet side of the flow path resistance portion 54.
  • the pulse tube inflow flow 56 becomes more difficult to flow than the pulse tube outflow flow 58.
  • the DC flow 68 from the low temperature end to the high temperature end of the pulse tube 50 is promoted.
  • the temperature difference between the first temperature and the second temperature is 100K in the above example, and may be in the range of, for example, 50K to 150K.
  • the temperature regulator 62 sets the temperature difference selected from this temperature range between the pulse tube inflow flow 56 on the inlet side of the flow path resistance portion 54 and the pulse tube outflow flow 58 on the outlet side of the flow path resistance portion 54. It may be configured to occur in between.
  • the temperature controller 62 may be configured to control the temperature difference.
  • the temperature regulator 62 can control the DC flow 68 by changing the temperature difference and changing the flow path resistance difference.
  • the temperature controller 62 may include a cooler 66 that cools the pulse tube outflow flow 58 on the outlet side of the flow path resistance portion 54.
  • the cooler 66 is arranged in the bidirectional flow path 52 on the outlet side of the flow path resistance portion 54.
  • the cooler 66 may be a liquid-cooled heat exchanger, an air-cooled heat exchanger, for example, a cooler using a cooling element such as a Pelche element, or another appropriate cooler.
  • the heating temperature of the heater 64 for realizing a predetermined temperature difference can be lowered.
  • the heater 64 heats the working gas to 120 ° C. to generate a temperature difference of 100 ° C.
  • the cooler 66 cools the working gas to, for example, ⁇ 20 ° C.
  • the configuration of the heater 64 and the heat resistance of the pulse tube refrigerator 10 can be simplified.
  • the heater 64 adjusts the temperature of the working gas on the inlet side of the flow path resistance portion 54
  • the cooler 66 adjusts the temperature of the working gas on the outlet side of the flow path resistance portion 54, so that the temperature is more reliably adjusted.
  • the temperature difference can be managed.
  • the cooler 66 can cool the pulse tube inflow flow 56 heated by the heater 64 before flowing into the pulse tube 50. It is possible to prevent the gas from flowing into the pulse tube 50 at a high temperature and affecting the refrigerating performance of the pulse tube refrigerator 10.
  • FIG. 3 is a diagram schematically showing a part of the pulse tube refrigerator 10 according to the embodiment.
  • the embodiment shown in FIG. 3 is the same as the embodiment shown in FIG. 1, except for the configuration of the temperature controller 62.
  • the temperature controller 62 may include a heater 64 that heats the pulse tube outflow flow 58 on the outlet side of the flow path resistance portion 54.
  • the temperature regulator 62 may include a cooler 66 that cools the pulse tube inflow flow 56 on the inlet side of the flow path resistance portion 54.
  • the heater 64 is arranged in the bidirectional flow path 52 on the outlet side of the flow path resistance portion 54
  • the cooler 66 is arranged in the bidirectional flow path 52 on the inlet side of the flow path resistance portion 54.
  • the flow path resistance section 54 can generate the DC flow 70 in the pulse tube refrigerator 10. Since the arrangement of the temperature regulator 62 is reversed with respect to the flow path resistance portion 54, the first temperature becomes lower than the second temperature.
  • the pulse tube inflow flow 56 on the inlet side of the flow path resistance portion 54 has a lower temperature than the pulse tube outflow flow 58 on the outlet side of the flow path resistance portion 54. Due to the difference in flow path resistance of the flow path resistance portion 54, the pulse tube outflow flow 58 becomes more difficult to flow than the pulse tube inflow flow 56. In this case, it is expected that the DC flow 70 from the high temperature end to the low temperature end of the pulse tube 50 is promoted.
  • the DC flow 70 from the high temperature end to the low temperature end of the pulse tube 50 is not desirable. This is because when the DC flow 70 includes a working gas flow penetrating from the hot end of the pulse tube to the cold end of the pulse tube, such working gas flow results in thermal penetration from the hot end of the pulse tube to the cold end of the pulse tube. This is because the refrigerating efficiency of the pulse tube refrigerator 10 can be lowered.
  • the temperature controller 62 may have heaters 64 on both the inlet side and the outlet side of the flow path resistance portion 54, and these two heaters 64 provide a temperature difference between the pulse tube inflow flow 56 and the pulse tube outflow flow 58. It may act to give.
  • the temperature controller 62 may have coolers 66 on both the inlet side and the outlet side of the flow path resistance portion 54.
  • the temperature controller 62 may not have the heater 64, but may have only the cooler 66.
  • FIG. 4 is a diagram schematically showing the pulse tube refrigerator 10 according to the embodiment.
  • the pulse tube refrigerator 10 is a GM (Gifford-McMahon) type double inlet type two-stage pulse tube refrigerator, and in order to adjust the DC flow of the two-stage portion, refer to FIG. 1 (or FIG. 3).
  • the DC flow generator described above applies.
  • the pulse tube refrigerator 10 includes a compressor 12 and a cold head 14.
  • the cold head 14 includes a main pressure switching valve 22, a first-stage pulse tube 116, a first-stage regenerator 118, a first-stage cooling stage 120, a first-stage buffer volume 126, a first-stage double inlet flow path 134, and a first stage.
  • a stage buffer line 136 is provided.
  • the main pressure switching valve 22 is connected to the first stage regenerator 118 by the regenerator communication passage 32.
  • the first-stage double inlet flow path 134 is provided with the first-stage double inlet orifice 128, and the first-stage buffer line 136 is provided with the first-stage buffer orifice 130.
  • the pulse tube refrigerator 10 includes a second stage pulse tube 216, a second stage regenerator 218, a second stage cooling stage 220, a second stage buffer volume 226, a second stage double inlet flow path 234, and a second stage.
  • a buffer line 236 is provided.
  • the second-stage regenerator 218 is connected in series with the first-stage regenerator 118, and the low-temperature end of the second-stage regenerator 218 communicates with the low-temperature end 216b of the second-stage pulse tube 216.
  • the second stage double inlet flow path 234 connects the main pressure switching valve 22 to the second stage pulse pipe 216 so as to bypass the regenerator (118, 218).
  • the second-stage double inlet orifice 228 is provided in the second-stage double inlet flow path 234, and the second-stage double inlet orifice 234 is from the branch portion 32a on the cooler communication passage 32 to the second-stage double inlet orifice 228. It is connected to the high temperature end 216a of the second stage pulse tube via.
  • the second-stage buffer line 236 is provided with a second-stage buffer orifice 230, and the second-stage buffer line 236 has a second-stage buffer volume 226 and a second-stage pulse tube high-temperature end via the second-stage buffer orifice 230. Connect to 216a.
  • the second-stage double inlet flow path 234 and the second-stage double inlet orifice 228 of the pulse tube refrigerator 10 shown in FIG. 4 correspond to the bidirectional flow path 52 and the flow path resistance portion 54 shown in FIG. 1, respectively. Therefore, the temperature controller 62 is provided in the second stage double inlet flow path 234.
  • the temperature controller 62 is in thermal contact with the second stage buffer volume 226. Since the heat of compression of the working gas is generated in the second stage buffer volume 226, this exhaust heat can be used as a heat source.
  • a part of the second-stage double inlet orifice 228 on the inlet side of the second-stage double inlet flow path 234 is installed on the surface of the buffer tank that defines the second-stage buffer volume 226, or is a working gas pipe that passes through the inside of the buffer tank. It may be configured as. In this way, the heater 64 that heats the pulse tube inflow flow 56 on the inlet side of the second stage double inlet orifice 228 may be configured.
  • the temperature controller 62 may be in thermal contact with the second stage buffer volume 226 via the heat transfer member.
  • the heat transfer member may be attached to the buffer tank and extend from the buffer tank to the second stage double inlet flow path 234. Since the heat of compression of the working gas is also generated in the first stage buffer volume 126 and the compressor 12, the temperature regulator 62 may be in thermal contact with the first stage buffer volume 126 or the compressor 12.
  • a cooler 66 for cooling the pulse tube outflow flow 58 on the outlet side of the second stage double inlet orifice 228 is provided in the second stage double inlet flow path 234 together with the heater 64 or in place of the heater 64. May be good.
  • the heater 64 and the cooler 66 may be arranged in reverse with respect to the second stage double inlet orifice 228.
  • the pulse tube refrigerator 10 shown in FIG. 4 has a loop path including a second stage pulse tube 216, a second stage double inlet flow path 234, and a regenerator (118, 218). Therefore, DC flow 68 can occur in this loop path.
  • the temperature controller 62 By combining the temperature controller 62 with the second-stage double inlet orifice 228, the DC flow 68 of the pulse tube refrigerator 10 can be adjusted.
  • the second-stage double inlet orifice 234 may have a flow path resistance portion 54 connected in series with the second-stage double inlet orifice 228 separately from the second-stage double inlet orifice 228, and this flow path may be provided.
  • the DC flow 68 may be generated by the resistance portion 54.
  • the pulse tube refrigerator 10 shown in FIG. 4 also has a loop path in the first stage, the first stage double inlet flow is combined with the first stage double inlet orifice 128 in order to generate a DC flow in the first stage.
  • a temperature regulator 62 may be provided on the path 134.
  • FIG. 5 is a diagram schematically showing another example of the pulse tube refrigerator 10 according to the embodiment.
  • the pulse tube refrigerator 10 shown in FIG. 5 is a GM type 4-valve type two-stage pulse tube refrigerator. Therefore, the pulse tube refrigerator 10 includes a first-stage sub-pressure switching valve (V3, V4) and a second-stage sub-pressure switching valve (V5, V6) instead of the double inlet flow path.
  • V3, V4 first-stage sub-pressure switching valve
  • V5, V6 second-stage sub-pressure switching valve
  • the first-stage sub-pressure switching valves alternately connect the high-temperature ends of the first-stage pulse tube 116 to the discharge port and the suction port of the compressor 12.
  • the first-stage sub-pressure switching valves (V3, V4) are connected to the high-temperature end of the first-stage pulse tube 116 by the first-stage pulse tube communication passage 140.
  • the first-stage pulse tube communication passage 140 has a first-stage flow rate adjusting element 142.
  • the second-stage sub-pressure switching valves (V5, V6) alternately connect the high-temperature ends of the second-stage pulse tube 216 to the discharge port and the suction port of the compressor 12.
  • the second-stage sub-pressure switching valve (V5, V6) is connected to the high temperature end of the second-stage pulse tube 216 by the second-stage pulse tube communication passage 240.
  • the second-stage pulse tube communication passage 240 has a second-stage flow rate adjusting element 242. Since the GM type 4-valve type pulse tube refrigerator itself is well known, detailed description of each component of the pulse tube refrigerator 10 will be omitted.
  • the second-stage pulse tube communication passage 240 and the second-stage flow rate adjusting element 242 of the pulse tube refrigerator 10 shown in FIG. 5 correspond to the bidirectional flow path 52 and the flow path resistance portion 54 shown in FIG. 1, respectively. Therefore, the temperature regulator 62 is provided in the second-stage pulse tube connecting passage 240. The temperature controller 62 is in thermal contact with the second stage buffer volume 226. In this way, the heater 64 that heats the pulse tube inflow flow 56 on the inlet side of the second stage flow rate adjusting element 242 is configured.
  • a cooler 66 for cooling the pulse tube outflow flow 58 at the outlet side of the second stage flow rate adjusting element 242 is provided in the second stage pulse pipe connecting passage 240 together with the heater 64 or in place of the heater 64. May be good.
  • the heater 64 and the cooler 66 may be arranged in reverse with respect to the second stage flow rate adjusting element 242.
  • the pulse tube refrigerator 10 shown in FIG. 5 has a loop path including a compressor 12, a second stage pulse tube 216, and a regenerator (118, 218). Therefore, DC flow 68 can occur in this loop path.
  • the temperature regulator 62 With the second stage flow rate adjusting element 242, the DC flow 68 of the pulse tube refrigerator 10 can be adjusted.
  • the pulse tube refrigerator 10 shown in FIG. 5 also has a loop path in the first stage, the first stage pulse tube series is combined with the first stage flow rate adjusting element 142 in order to generate a DC flow in the first stage.
  • a temperature controller 62 may be provided in the passage 140.
  • the flow path resistance portion 54 is a fixed or variable orifice, but the present invention is not limited to this.
  • the flow path resistance portion 54 may be a needle valve or other valve.
  • the DC flow in the pulse tube refrigerator 10 can be adjusted by combining the flow path resistance portion 54 with the temperature regulator 62.
  • the bidirectional flow path 52 is connected to the high temperature end of the pulse tube 50.
  • the bidirectional flow path 52 may be a flow path connecting the pulse tube and the low temperature ends of the regenerator.
  • DC flow can also be generated by providing the flow path resistance portion 54 and the temperature controller 62 in the bidirectional flow path on the low temperature side.
  • the double inlet type and 4-valve type pulse tube refrigerator have been described as an example, but in the DC flow generator according to the present embodiment, a loop path of the working gas including the pulse tube is formed. It can also be applied to other pulse tube refrigerators. Further, the pulse tube refrigerator may be a single-stage type, a three-stage or other multi-stage type pulse tube refrigerator.
  • the present invention can be used in the field of pulse tube refrigerators.
  • pulse tube refrigerator 50 pulse tube, 52 bidirectional flow path, 54 flow path resistance part, 56 pulse tube inflow flow, 58 pulse tube outflow flow, 62 temperature controller, 64 heater, 66 cooler.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Measuring Volume Flow (AREA)

Abstract

L'invention concerne un réfrigérateur à tube émetteur d'impulsions (10) comprenant : un tube émetteur d'impulsions (50) ; un passage d'écoulement bidirectionnel (52) qui est relié au tube émetteur d'impulsions (50) et à travers lequel un flux entrant de tube émetteur d'impulsions (56) et un flux sortant de tube à impulsions (58) s'écoulent en alternance, ledit passage d'écoulement à deux voies (52) ayant une partie de résistance de passage d'écoulement (54), et le flux entrant de tube à impulsions (56) passant à travers la partie de résistance de passage d'écoulement (54) depuis le côté d'entrée de celui-ci et le flux de sortie de tube émetteur d'impulsions (58) passant à travers la partie de résistance de passage d'écoulement (54) depuis le côté de sortie de celui-ci ; et un dispositif de régulation de température (62) qui est disposé sur le passage d'écoulement bidirectionnel (52) de manière à réguler le flux entrant du tube émetteur d'impulsions (56) à une première température sur le côté d'entrée de la partie de résistance de passage d'écoulement (54) et réguler la sortie de tube émetteur d'impulsions (58) à une seconde température, qui est différente de la première température, sur le côté de sortie de la partie de résistance de passage d'écoulement (54).
PCT/JP2021/003503 2020-03-23 2021-02-01 Réfrigérateur à tube émetteur d'impulsions WO2021192611A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020-051332 2020-03-23
JP2020051332A JP2021148395A (ja) 2020-03-23 2020-03-23 パルス管冷凍機

Publications (1)

Publication Number Publication Date
WO2021192611A1 true WO2021192611A1 (fr) 2021-09-30

Family

ID=77848286

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/003503 WO2021192611A1 (fr) 2020-03-23 2021-02-01 Réfrigérateur à tube émetteur d'impulsions

Country Status (2)

Country Link
JP (1) JP2021148395A (fr)
WO (1) WO2021192611A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06313645A (ja) * 1993-04-28 1994-11-08 Aisin Seiki Co Ltd 物体冷却装置
JP2001241792A (ja) * 2000-02-24 2001-09-07 Sumitomo Heavy Ind Ltd パルス管冷凍機及びその運転方法
JP2006234338A (ja) * 2005-02-28 2006-09-07 Iwatani Industrial Gases Corp 二段式パルス管冷凍機
JP2016057016A (ja) * 2014-09-10 2016-04-21 住友重機械工業株式会社 スターリング型パルス管冷凍機

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06313645A (ja) * 1993-04-28 1994-11-08 Aisin Seiki Co Ltd 物体冷却装置
JP2001241792A (ja) * 2000-02-24 2001-09-07 Sumitomo Heavy Ind Ltd パルス管冷凍機及びその運転方法
JP2006234338A (ja) * 2005-02-28 2006-09-07 Iwatani Industrial Gases Corp 二段式パルス管冷凍機
JP2016057016A (ja) * 2014-09-10 2016-04-21 住友重機械工業株式会社 スターリング型パルス管冷凍機

Also Published As

Publication number Publication date
JP2021148395A (ja) 2021-09-27

Similar Documents

Publication Publication Date Title
JPH10132404A (ja) パルス管冷凍機
CN107328130B (zh) 采用主动调相机构的多级脉管制冷机系统及其调节方法
TWI716097B (zh) 調溫系統
US20070261416A1 (en) Hybrid cryocooler with multiple passive stages
CN105783319B (zh) 回热式制冷机预冷的低温j‑t节流制冷机
JP3702964B2 (ja) 多段低温冷凍機
JP3806185B2 (ja) 流体制御機構付蓄熱型冷凍機及び流体制御機構付パルス管型冷凍機
JP5882110B2 (ja) 蓄冷器式冷凍機、蓄冷器
WO2021192611A1 (fr) Réfrigérateur à tube émetteur d'impulsions
WO2021192721A1 (fr) Réfrigérateur à tube émetteur d'impulsions
CN105509361B (zh) 带有阻隔流动的声功传输部件的多级回热式制冷机
US7305835B2 (en) Pulse tube cooling by circulation of buffer gas
US5575155A (en) Cooling system
US20150033766A1 (en) Refrigerator
JP2015117838A (ja) 蓄冷器式冷凍機
JP2013217516A (ja) 蓄冷式冷凍機
US7047750B2 (en) Pulse tube refrigerating machine
JP2007502928A (ja) 真空装置
TWI759219B (zh) 史特靈冷凍櫃
WO2020235554A1 (fr) Réfrigérateur à tuyau d'impulsion, et tête froide pour réfrigérateur à tuyau d'impulsion
CN1388344A (zh) 辐射制冷与脉冲管制冷相复合的空间低温制冷机
JP2000220902A (ja) 冷却装置
CN113803905B (zh) 一种间隙式制冷机高效预冷及液化系统
WO2024111338A1 (fr) Réfrigérateur joule-thomson
JP2023538861A (ja) パルス管冷却装置の為のハイブリッドダブルインレット弁

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21777042

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21777042

Country of ref document: EP

Kind code of ref document: A1